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Finding the Fourth Proportional to 186,279.60, 279,397.80 and 53,180.40

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Solution

The fourth proportional to 186,279.60, 279,397.80 and 53,180.40 is: 79,764.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,279.60 : 279,397.80 = 53,180.40 : x
  2. Step 2: Convert to fraction form
    186,279.60/279,397.80 = 53,180.40/x
  3. Step 3: Cross multiply
    186,279.60x = 279,397.80 × 53,180.40
  4. Step 4: Simplify right side
    186,279.60x = 14,858,486,763.12
  5. Step 5: Solve for x
    x = 14,858,486,763.12/186,279.60
  6. Step 6: Final answer
    x = 79,764.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.